{
  "manageEntity": {
    "action": "Save",
    "entityId": "321328982",
    "entityType": "Track",
    "nonce": "0x239aba688085f94ffe713186441907d10603e6bb72990c29378b7b8633f0129a",
    "signature": "0x2be5ed56f40ed7174934742bda3bc8a39ccc13c0308ef9b7b6d3f6e600f9b7c0097558cbd6be1f2e824abdd47d2d23ba229be5bd2af9936b2408a7d96d26652b1b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}